Reply to "How do you figure these train Combinations"

rattler21OGR Forum Member MEMORIALIZED MEMBER

Using the Permutation formula with 7, 5 and 3.

1,949,482,876,800. If you change one item every fifteen minutes, you will come to a repeat after 37 million years. Significantly more if you do not restrict the engine to the front of the train. John in Lansing, ILL

4/4/2010:47 AM

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